Typewriting machine



J. H. BARR.. TYPYEwRmNG' lviAcHmE.` AFPLICAUON FILED SEPT. I, v|920.

Patented Apr. 25, 1922 WITNESEES @www l. H. BARR.

` TYPEWRITING NIACHiNE.

APPucATloN man SEPT. 1. mvo.

Patented Apr, 25,v 1922.

2 SHEETS-SHEET 2.

wlTNESEE 'f i M 33W @Holm/1g fourre si'aiq PANY, ILIEON,v NEW YORK, A. CORPORATION 0F NEW YORK.

- myrnwnrrine i MiieiiiNn.

maaier. v

spacebar mechanism7` resulting vin the climination of spreadsfor the printing of aV character in a :place which shouldbe a blank space.` c

To. the above and other ends which will Vhereinafter appear, iny presentl invention consists in the features of construction', `combinations `of devices and arrangements of parts to be hereinafter described and particularly pointed out in the claims. In the accompanying drawingswhich illustrate one form of my invention,l v

Figure 1 isa front to rear vertical sectional view of a typewriting machine embodying my invention, partsof the machine 'being' Y emitterL y'and' Darts broken away; Y 'y Figure 2 is'a fragmentary vertical rsec,-

l tional view corresponding to Fig. 1 rbut showing the parts in the-position they' occupy when the space bar or key ris'depressed.

l' 'ure 3 is a vertical' sectional view taken .on t plane indicated b y the dotted line kr f in Fig'. 1 and looking' forward.

'Figure L is a fragmentary perspective vView of Vparts of the escapement mechanism. Figure is' a rear elevation ofthe dog replier and the escapeinentt'dogs or fdetents mounted on it. f 'Y As appears from `Fig. 1, the main frame of the. machine comprises side plates -or frames 1 which are connected at the frontby4 a U- ,shapodfiame 2 that encloses the keyboard' and at the rear by a cross plateer bar, not shown. Arranged for reciprocation above the main frame is a traveling carriage-coming inclined plate or bar 3 at the ends el? which are secured 'forwardly extending sidey or end plates ri`he` top and bottom of thenlate glare formed with grooved ball seats. or ru 'ays 5' which receive sets of '-Appii'catioa med spfmber 1,l ieaefsreriai No; 407,303.

'Specificatiollf Letters Patent Y Patented Apr. 25,

anti-fricti'on rollers y6. The upperfset l'of rollers 6 (io-operate with a grooved ball seat '.'JOHN Enma-0F NEW YORK', N. vY., Assieivon To REMINGTONVTYPEWRITER COM- y formed in a guide bar 7 which extends cross;l i

.wise of the machine and is secured by screws r 8 to the upper end portion of an angular bed plate or support 9'which is mountedon the upper'rearend portions .oftheframe groovedrun way or seat for the lower set of rollers 6. Pivotally mounted on the travels .ing carriage 3-4 is a roller platen10-with the front face whereof co-operate type bars 11. The set of type bars or printing devices are arranged in an arc of a circle below the platen and are normally horizontally l disfposed, their free ends resting ona pad 12 supported on a vcurved support or `rest 13.

l.Caid type bars at their rear are pivoted on a common pivot wire 14 mounted on a vertical oai' is nprovided forward of lits pivot with a plates 1 and is suitably secured thereto. .The i ktype bar support or segment '15,.v Eaclitype Contact edgeor. face 16 for cooperation with the carriageV feeding devices andjrsaid type bar is constantly connected to a yprinting key, .Y

toitl'iis end being' formed below itsV pivotwith fan inclined cam slot 17. The slot 17 is ten-` 'gagedv by4 a headed pin 18 projectinglater-A.V

ally fromthe rear end of the longerfarm of I abell` crankl19,the series of'bellfcranks 19. f i, being Varranged in guide slotsv20 formed at# there'ar of the support 13 and provided witha common pivot wire 21:., The shorter arm of eaclrbell crank is connected byfalink'22 withl ana-ngularlever -23 lpivoted ati24 in a rectangular sub-frame25 detachably mounted vinthebase or lower portion of the `main frame. Each `angular liever 23 carries'a headed pin 26 vwhich engages in a-slot 27'ffo'rined in the` rear ari-n of a key lever 28, the. set 'off key levers extending forward and beingv pivoted at 29 in the sub-'frame 25. Each key leverterniinatesat its Aforwardend in an.. upl right stem portion which is provided with a cap or key 30e-it will-be understoodvthat when one of the printing` keys 30 isdepr'essed it will actuate its key lever 28, which through the connected vlink 22 will swing the associatev bell crank 19 on its pivot, causing the actuating pin 18ste operate-the associate type f bar' il which will be swungfupward and rearward into printing contact with the plate'n l() and the paper thereon.

' During printing movements the type bars will actuate the carriage feedingmechanism or escapement devices, which are connected Vthe'dog 38 is released as described, which rewith and control the carriage through a feed rack 3l Vwhich is mounted `on the carriage and normally meshes with a eedpinion 32. The escapement mechanism is of the direct or ordinary style, that is, it kis adapted to afford alet-ter feed of the carriage during the ret-urn stroke of a printing key. The

feed pinion 32 is operatively connected with 34 vertically disposed `behind the rack 3l Vand underthe carriage frame bar 3, the escapeine'nt wheel 34 and pinion v32 beingk the `fixed bearings 36 and 37. Co-oper'ative with the teeth of the escapement wheel 34 are escapeinent dogs or detents 38 and39, these dogs being` mounted on a.` dog carrier vorro'cker designated asa whole by the numeral 40 and comprising an upright plate- 'like portion 4l and a cylindrical cross poi?- tion 42, the latter formed at its ends with seats'or depressions which receive the pointed ends of? bearing pins 43 mounted Von a stationary bracket or bearing` member 44. The dog-38 is al feed or stepping dog Ybeing pivoted at45v at the rearxta'ce of the dog rocker and the tail oi said dog has connected to it a coiledlspring 46, one end of said spring Vbeing anchored to a screw pin 47 projecting rearward from the part 41`ot the dog rocker. The Vspring 46 tends constantly toY turn the upper or toothed end "ot the dog 38 towards *the right, as `viewed trom the rear,rbut this tendency is opposed normally by the carriage motor or main spring (not shown) ot the jvmachine,'which main springis connected to the carriage so Aas Vconstantly to urge it in printing direction. The pull of the spring drum or main spring is transmitted. through the carriage rack 3l to thefeed pinion 32 yand thence Yto the escape-nient wheel which -as a result has a co-nstant tendency to turn so that the teeth at its lower sidewill moveleftwarch'as viewed from the rear of the machine,V Considering Fig. 5, it

will be seen that this le'l'tward movement ot the escapement wheel teeth is in opposil and 5, the engaged tooth et the escapement wheel maintainingv said dog 38 in contact with a limiting` stop 48 projecting from the dog rocker into the path of the dog 38.

'atoothed'escapement wheel or circular rack' When freed from the escapement wheel the l dog 38 will be swung rightwardV :from'the about its pivot 45 being limited by a stop 49 projectingfrom the dog rocker. When wardto` clear the escapement wheel Vtooth with which it had previously'engaged, will on the return -moveinent of the dog rocker be brought into the path of the oncoming escapement wheel tooth and will be carried by said too-th back intovengagement with the stop 48, thus resultingV in a leftward it'eed .or advance movement or" the carriage for a letter space distance, this movement taking place on the return movement of the dog rocker and of the operated printing key 30. The escapeinent inl other words, is what is known inthe art as ordinary or direct, in contra-distinction from` a reverse or full drop escapeme'nt whose. use results in the letter feed taking place during the key depression or bedtoreY the return movement of the key begins. Moveinent'troin the' print ing keys tothe dog rockeris transmittedk through the type bars whose Contact faces 16 are adapted to cooperatev with the front edge of a universal bar 50, vsaid, universal bar be'- ing arcuate in` shape and being housed 1n a seat ory depression 51 in the rear of the type bar segment l5.- Near. its endsy the uni. versal Vbar has rearward extensions 52 whichH are pivotally connected at 53 y with crank arms 54 iXed to a shaft 55 :from which said crankarms 54 project upwardly. v Cen,

rearwardly Vextending arm 57 [carrying` Y a contact device or `upturned rear end portion ioo iio

58 which is adapted to engage with the point of the adjustablev contact pin or screw 47 vwhich projects V'foirwarcl from theV dog rocker. The arm 57has a downwardly .extending lugV 60 formed with an openinoutlied slot 61 that .is engaged byv apin 62 izo projecting y laterally from the ii'pperfre'e end `of a lcrank arm 63 ixedk to a pivotal axis 64 which also carries 'a rearwardly extending crank arin 65, the crank arm 65 being connected to the crank arm 56 by a. vertical link 'l versal bar frame comprising the curved universal bar 50 and its rearward extension 57. This frame is supported "from the axes 55 mentsjto which the type bar segment l may be subjected, the result being' that the universal bar at its front edge is always in posi:

tion normally to receive actuations from the Ycontact devices or edges 16 of the type bars.

The' universal bar frame is provided with a coiled restoring spring .67 which is hori-v zontally disposed and at its rearend is hooked over a pin 68 projecting upward vso from V the arm 57, `The forward end of said spring is fixed to an adjustable anchorage 69 mounted on a pin or 'screw 70 supported onfan arm 71 fixedly connected to and eX- tending downwardbehind the type bar seginent" 15.` The universal bar construction and mounting need not be further described since no claim is made for them in the present case. The spring 67 normally maintains the universal bar in vcontact withthe front wall of the depression 51 and at this time the contact or lscrew 47 on the dog rocker is contiguous to the end portion or contact piece 58 of the universal bar, the dogrocker being maintained in this position normally by the usual dog rocker spring 7 2. When one of the printing keys 3.() Ais depressed it acts through thev train of type bar actuating devices to swing the connected type bar up to printing contact with the platen and causes the contact face 16 of said type bar, acting against the universal bar, to Vmove theY universal bar rearward lagainst the pull of the springjT, this movement being tra-ns..

mitted through' 'the screw 47 to the dog rocker 40, which will `be swung rearward from the Fig. l positiomreleasing the feed er loose dog 38 from'the escapement wheel and bringing the fixed dog 39 into engagement therewith. Thefeed ldog 38 when re` leased will be swung sidewlse on its pivot.

45 into pesition to'engage'withthe f next tooth of the escapement wheel ,when the latter starts to turn, during the return stroke 0f the operated printing key 30.` During said return strokethe actuated type bar will l swing back, permitting the universal bar to .be vrestored by -its spring 67 and the dog rocker to be restored by its spring 72, the dog rocker as itsw-ings back to normal carrying the dog 39 out of the escapement wheel and bringing the stepping dog `38 into the pathl ofthe oncoming tooth, thus per# -rnitting a letter space advancemovement of the carriage under the impulse ofthe carriage spring, as has been already explained.

Referring now specifically to the novelV ,features of my present invention, these comprise Primarily means for preventing what is known as a spread or the striking of the first character of a word at the point or *place on ythe paper which should bea'space; The -e'scapem'ent 'mechanism as has been. A'explained is whatV iscalled a direct or some-.i` K vtimes* afffno drop-'esca-pe'inent; that is, it is an escapement which under the actuationv ofy the printing keys affords no Vmovements of the carriage on 'down strokes'of the keys but results in substantially vfull letter"spacel 1 step by step movements on the returnl or rip-strokes of the printing keys. llheispace` being employed to'actua'te the space bar;

and consequently,y as well for the further reason that there is .a` common tendency onV the part of operators to dwell on the space bar,'liabilityto produce spreads 'is quite;

prevalent. vresult yof Vpreventing spreads iszaccompllshed in the'present instance by"providinga space key-'or bary mechanism in lwhich full letter space movementof the carriage results from the,

ifv the operator should dwell on thefspace bar lor key at the'bottom of itsy stroke, the

`spacing of the carriage will nevertheless have been accomplished, so that if the operator should actuate' one "of the printing keys,

resulting inthe printing of a character, this character will ybe impressed on "the'paper'l fellowing ablankV spacek thereon; The space lrey or barinthe present instance is inthe]` roev form of a cross vbar extendingfrom'side; Y' to sideof the machineforward -of the let- 1' bearingin brackets or supports 76 fixed to rand extending downwardfrom the subfi'ame ter keys and connecting 'the front ends of two space'lbar levers 74, which at thei'r-rear;` endsareY iixedly 'secured' to y a-rock shaft'75 2 5, lthe devices aforesaid constituting a'.

spacing frame.l Arranged at-the middlelofthe rock lshaft 75 and extending rearward therefrom vis a curved'leverr arm 77. AAt its front end this Alever arm is bent around the rock shaft 75 towhich it is Asecured by'a cross pin 7 8. The rear or 'freev end ofthe crank arm' 77 isV adapted to 'contact Vwith the curved under face 7 9 of an angular lever or cam member 80, which is pivoted at 81 rto an angular bracket 82,'thisbracket having an ear S3 bent. fromfit at rightangles andformed with elongated slots 84, Figs. 3!

and Ll, .These slotsprovide for adjustment of the bracket along the'rear facefo'f the subfframe 25 `to whiclrfsaid `bracket is se-Y j cured. by headed screws 85 passing through the slots Se and threaded into the sub-frame 125.. The upstandingarm of the cam plate or, member 8O is provided nearits end with a laterally projecting pin 86 which engages *inv a slot 87. formed in the shorter Varm 88 of arlever member or so-called hammer or striker which-further comprises an .angu- Y larlyfdisposed arm 89 terminating in an en- -Vlargement or head 90. The lever or hammer 'is 'further provided with an upwardly eX- tending toe piece or contact 91 ,projecting upward above its pivot; This pivot is a headed shoulder screw 92 which is threaded into the upper end of the bracket 82, a washer 93 being interposed between the hammer and the bracket so as to bring the plane of the hammer to the right of the .plane oit' camk member 80 and permit their Apin and Islot connection. The contact or toe 91 is adapted to co-'operate with the lower free end of an arm. 94; which is lixed to the front of the dog rocker above its pivot and curves forward and downward therefrom. The arm 94 `has at its upper endan angularly disposed ear 95 which receives screws 96 that secure it to the` front face of the krocker plate 41.

' .ation .being determined by theV stop 78ai lying in its path.k This space bar stroke willbe transmitted vby the arm 77 through its rollf ingcontact with Vthemember or lever SO and through thepin and slot connection 86, 87

`to the hammer member causing it through.

its toepiece 91 to over-travel sufficiently to give a hammer blow vt-o the arm Sla-FedectiveV Vto actuate thedog rocker, swinging the dog rockerfrom the Fig. 1 to the Fig. 2 position so that when the dog rocker completes its .vibratory movement. and swings Qaack to normal, whichlitwill do as the hammer device rebounds orv swings back, a letter space `feed movement or the carriage will take place irrespective of whether the space bar is released from' its depressed position or not, and under a quick action causes the carriagerto space a letter 'feed distance before the space keystroke is completed,y giving a full drop vor reverse eed.` This results from the fact that the mechanism is so set that the hammer willy operate the escapement only by overthrow on the down stroke ot the. space bar; vthat is, a slow depression of the space bar resulting in a slow turning of the hammer device about its pivot 92, while it will carry the .nose or toe 91 into engagemenuwiththe arm Cleland will actu-ate the doggi'oeker tofsome extent,l will not 'swing said dogv rocker ar enough rearward to disengage the/feed dog 38 romfthe escapement wheel The usual operating stroke is necessary tothis end, such stroke `causing overthrow as described, sothat ,the

inertiaof thedogrocker will cause thegfdogs and escapement `wheel 'to 'coi-operate'eiiectively. lt will be understood lthat the actu ation of the escapement mechanismbythe space bar 73, as has just beeny described, will not aiiect the printingkeyc operated.univer-` sal bar, but that during such operation the contact 59 will swing away from the con tact 58, which latter will remain motionless. Furthermore, Awill beapparentthat when the escapement mechanism is operated by the universal bar,v the space bar and hammer mechanism will not be affected, but the ldog rocker will swing on its pivot, carrying with it the arm'9e without affecting4 the toe piece 91 orvanyother part of the mechanism connected with the space bar. l K

Certain novel features disclosed inthe drawing are not claimed herein since they do not in themselves constitute part of'the present invention. Y

Various changes may ber made without departing from my invention. y. i

What I claim as new and desire to secure by Letters Patent, is:

1. Tn a typewriting machine, the combination or a traveling carriage, carriage'feeding devices comprising a pivoted dog rocker, a pivoted hammer device, anda key effective on said hammer device to cause it to actuate said dog rocker through striking a blow.n

2. ln a typewi'itingmachine, thecombinaf tion or a traveling carriage, lcarriage feeding devicesr comprisingfa pivoted dog rocker7 a pivoted hammer device normally separated from said dog rocker, and a key eii'ective on said hammer device to cause it to actuate said dog Arocker resulting in a .vibratory 110 lmovement of said dog rocker due to th overthrow of saidhammer device. n ,y

Tn a typewriting inachine,the combination of a traveling carriage, carriage feeding devices comprising a pivoted dog rocker, an arm iixed thereto, a pivoted hammer device having a projection*co-operating with' said arm, a key and connections to said hammer and key operated devices for giving a hammer blow to said dog rocker and effectively actuating said dog rocker through overthrow ot certain of said key operated ldevices. 130

1,414,167k v .l 'j

5. ln a typewriting machine, the combination of a carriage,carriage feeding mechanism comprising a dog carrier, a universal bar for actuating said dog` carrier, printing keys operative on said universal bar, devices for giving a hammer blovv to said dog carrier, and a space key effective on said last tion of a traveling carriage, carriage feed-- ing devices comprising a pivoted dog rocker, an arm fixed thereto, a pivoted hammerdevice having a projection co-operative with said arm but normally separated therefrom, a space bar frame, and a member interposed between said hammer device and said space x bar frame, said member having rolling contact With said space bar frame and a pin and slot connection with said hammer device.

8. In a typewriting machine, the combination of a traveling carriage, carriage feeding devices comprising a pivoted dog rocker,

Ya pivoted hammer device effective on said rocker, a pivoted cam member having a pin and slot connection with said hammer device, and a space bar or key effective on said cam member.

9. In a typevvriting machine,the combina-A tion of a traveling carriage, carriage feeding devices comprising a pivoted dog rocker, a pivoted hammer device effective on said rocker, a pivoted cam member having a pin and'slot connection with s'aid'hammei'- device, and a key operated arm having a rolling contact with said cam member.

l0. In a typewriting machine, thecombination of a traveling carriage, carriagefeeding devices comprising a pivoted dog rocker, a space bar, a pivoted arm operative thereby, an angular lever having a rolling contact With said arm, a hammer member with Which said lever has 'a pin and slot connection, and

an arm rigid With said dog rocker and operative by a contact on said hammer member.

1l. In a typevvritng machine, the combinationV of a carriage, escapement devices.

comprising a pivoted dog rocker, printingV keys operative on said escapement devices,`r

a space bai', a cam plate operative bylsraid .space bai', and a hammerdevice operative by said cam plate and effective to vibrate said dog` rocker.

112. in a typewvriting machine, the'combination of., a carriage, escapement devices comprising a, pivoted dog rocker, printing keys operative on said escapement devices,v

a space bar a pivoted cam havinga curved v i face, an' arm operative' by said space bar f and veffective on said curved face, and a hammei-*operative by said cam to vibrate said dog rocker to cause a feed of the cari'iage.

13. ln a'typewriting machine, the combination of a carriage, escapement devices comprising la pivoted dog rocker, printing key levers,.a space bar, a detachable subframe on Which said key levers are mounted, arbracket `on said sub-frame, a cam plate pivoted on saidv bracket, and a hammer "device pivoted on said bracket and operative by said pivoted cam-plate, said hammer device being effective to cause a vibration y of said dog` rocker anda feeding movement of the carriage. y

lll. In a typeivriting machine, the combination of a carriage, escapement devices4 comprising a pivoted dog rocker, Vprinting keys effective on said dog'rocker tov cause-a4 i director ordinary7 feed of the carriage, a space bar, a ypivoted arm `operativethereby,

a pivoted cam plate having a rolling contact with said arm, andaV pivoted hammer. device havinga pin and slot vconnection With said i cam plate and providedvvith acontact normally separated from said dog lrocker* but eifectiveto vibrate the same. Y

l5. Inatype'vvriting machine, ,thel combi-l i ,l nation of a platen, a carriage, anescapement f wheel, a dog rocker, escapement dogs'thereon, "a universal bar operative on said` dog rocker, type bars, `printing keysconstantly connected to'said type bars' and effectiveto. cause said type bars both toprint against the platen and also Yto actuate theuniversal bar, and a space bar 'effectivey to cause an operation of the dog rocker, fall operative kInovement of said lrocker in Vone direction being Y due to thev inertia` of the dog rocker itself.

Signed at the borough of Manhattan, city ofNeW York, in the county of NewYork and State of New York, this'27th day of August, A. D. 11920.

Nitnessesz i- A CHARLES E.SM1TH, ,j E. M.IWELLs.

f fJoHNii. BARR; 

